Advanced Web-developers Package

by Mikhail Kalashnik

18 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,827 reviews

2,261,390 users

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 993 reviews

1,295,050 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

Full Web Page Screenshots (♥♥♥♥♥) by susbox

FireShot makes full web page screenshots. Demo: http://bit.ly/RlBQMV

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

Stylish by Jason Barnabe

Rated 4 out of 5 stars 817 reviews

477,146 users

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 309 reviews

283,708 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 352 reviews

150,656 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

Html Validator by Marc Gueury

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon

For Online HTML 5 validation, you need 0.962
http://users.skynet.be/mgueury/mozilla

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 28 reviews

22,077 users

Finds HTML elements matching chosen CSS selector(s) or XPath expression

Secure Login by Sebastian Tschan, Sarah Av.

Rated 4 out of 5 stars 381 reviews

46,070 users

Secure Login is an extension for Firefox integrated password manager.

Firesizer by orev

Rated 4 out of 5 stars 129 reviews

28,501 users

Allows you to resize the window to specific dimensions.

NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.

Image-Show-Hide by Dmitriy Altuhov

Rated 4 out of 5 stars 32 reviews

8,104 users

simply turn on|off images on all web-pages and (optional) autoreload current...

Firecookie by Jan Odvarko

Rated 4 out of 5 stars 61 reviews

2,980 users

Firecookie is an extension for Firebug that makes possible to view and manage cookies in your browser

Firecookie is part of Firebug since Firebug 1.10

Nightly Tester Tools by Automation Development, Tony Mechelynck, others

Rated 4 out of 5 stars 191 reviews

29,646 users

Useful tools for the nightly tester.

Custom Buttons by Yan, cubegm, others

Rated 4 out of 5 stars 101 reviews

64,411 users

Gives a possibility to create custom toolbarbuttons...
Collector's Note Toggle Javascript Button (http://xsms.nm.ru/custombuttons/en/)

Console² by Philip Chee, zeniko

Rated 5 out of 5 stars 49 reviews

7,868 users

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.
  1. 1
  2. 2
Results 115 of 18

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections